Railway truck



Jan. 6, 1942 D. s. BARROWS RAILWAY TRUCK Filed May 22. 1939 truckstructure.

Patented Jan. 6, 1942 UNITED STATES PATENT" OFFICE 4 a v 2,268,997 I .oe I RAILWAY TRUCK Donald S. Barrows, Rochester, N. Y., assignor to TheSymington-Gould Corporation, Rochester, N. Y., a corporation of Maryland2 Application May 22, 1939, Serial No. 275,077 1 4 Claims.

The invention relates to a railway truck and more particularly to a tie,member connecting a pair of spaced side frames An object of theinvention is the provision, in a railway truck, of a pair of relativelymovable side frames connected by means of a tie member which. maintainsthe side frames in a predetermined spaced position or relation.

Another object of the invention is the provision of a resilient meansassociated with side frames and connecting tie means of a railway truckto cushion the movement of the parts and prevent rattling or chatteringof the parts. 7

Another object of the invention is to provide, in a railway truck, anarrangement and construction whereby an anti-rattling or anti-chatteringmeans is carried by a tie member which connected spaced side frames.

l These and other objects of the invention will become apparent from aninspection of the accompanying drawing which illustrates, in variousfigures, an exemplification of the invention and wherein:

Figure 1 is a horizontal sectional view of a side frame. of a railwaytruck having associated therewith means for connecting it to a.sim-'ilarly constructed side frame (not shown).

Figure 2 is a vertical sectional view taken along the lines 22 of Figure1; looking in the direction of the arrows.

Figure 3 is a vertical sectional view taken along the lines 33 of Figure2, looking in the direction of the arrows.

Referring now in detail to' the drawing, wherein like referencecharactersindicate like parts, the numeral I designates 'a portion of arailway. truck comprising a pairof laterally spaced side frames 2, onlya portion or lower extremity of .one being shown. The side framesemployed in the instant structure 'are preferablyfof a type describedand claimed in my Patent No. 2,132,382, granted october ll, 1938, whichcovers a railway truck of the spring plankless'type and includes twotransversely spaced side frames joined intermediate their ends by aload-carrying member or bolster and being capable of movement relativeto one another in a direction longitudinally of the truck structurewithin certain predetermined limits in order to incorporate a desireddegree of flexibility inthe As the present invention has to doparticularly with a connecting means for maintaining the side frames inproper spaced relation and means associated therewith to prea box-likemember.

a formed by vertically spaced horizontaltop and bottom webs 4 and 5,respectively, which are joined adjacent their extremities byhorizontally spaced, substantially vertical side walls 8 to form The topor upper web 4 is continued laterally of the truck beyond the planes oftheside walls to provide outer and inner extensions! and 8,respectively, which, together with the top web, form an adequate areafor the support of superimposed bolster supporting springs 9, indicateddiagrammatically.

Aspreviously stated, the side frame of the present truck structure iscapable of movement both in a vertical and a longitudinal directionrelatively to the other side frame of the truck, and since'the truck isdevoid of a spring plank, means has been provided to maintain the lowerextremities of the side frames in a predetermined transversely spacedrelation; To the accomplishment' of this purpose there is illustratedatie means or connecting bar or rod I0 having an intermediate portion llthereof formed, throughout its extent, ofa circular bar .of course, beunderstood that the enlargements or ends may be cast as separate unitsand secured to the intermediate portion by any of the numerous wellknown methods. I

As the extremities l2 are positioned in the same horizontal planeas theinner extensions of the side frames, the inner extension 8 of each sideframe is convoluted,'indented or depressed, as at 13, to form anupwardly opening pocket or recess l4 for the accommodation of theassociated rod extremity which serves as a reinforcement of the innerextension in the immediate area subjected to stresses v resulting fromthe bot tom connection.

' Upstanding from each inner extension; adjavent a vibration or rattlingthereof, it will not cent the associated pocket, are longitudinallyspaced substantially vertical hinging lugs or ears I formed integrallywith the extension to overlap the associated tie bar end I2. Sufficientclearance is provided between the ears and interposed connecting rodextremity to allow an unrestricted horizontal angling movement of theconnecting rod with respect to the side frames, thereby eliminating. thecreation of any abnormal stresses which would tend to either bend theconnecting rod or shear the ears or lugs from the inner extension. Eachenlargement has an opening l6 directed horizontally and in substantialalignment with correspondingly formed apertures I! provided in theadjacent ears to accommodate a pintle or securing means l8 whichprojects through the opening and apertures and about which theconnecting rod is free to pivot to form an attachment between theconnecting rod and side frame. The pintle may be of any character, suchas the headless key 19 having intersecting cotters 20 associated withextremitiesthereof and positioned outwardly of the ears to prevent theaccidental displacement of the key. However, the illustrated key ispreferred to a conventional bolt or the like because, by reason of thisconstruction, the pintle may be positioned in the close proximity of theinner extension to provide a much more rigid structure than were aconventional bolt employed since the stem of the bolt would haveto bepositioned at a greater elevation from the inner extension so as toaccommodate the head thereof. The opening [6 in the. rod end is madeslightly larger than the accommodated pintle so that the connecting rodmay be free to move relatively to the associated. side frame in anangular and pivotal manner, and since this clearance between. the pintleand enlargement must of necessity exist, unless. some provision is madethe connecting'rod will vibrate, when in service, to create anobjectionable noise, rattle or chatter. To overcome this undesiredcondition means has been provided to cushion the movement of theconnecting rod, and accordingly each connecting rod. enlargement isprovided with a cylindrical, downwardly opening, vertically disposedhousing or receptacle 2 I: positioned outwardly of the associated pintleand in the vertical plane of the convolution or indenture |3-.

Positioned within and extending outwardly of the housing is a spring orresilient means, represented: by a coil or helical spring. 22, whichabuts or bears against the convolution or indenture to react inavertical direction and urge the associated end of the connecting rod.upwardly. In this manner the slack, clearance or play between the pinvand the enlargement is taken up and the movement of the connecting rodis cushioned 0r resiliently controlled to entirely eliminate any rattleor chatter.

When the connecting rod moves angularly with respect to the side framethere will be a slight sliding movement between the lower extremity orthe portion of the spring abutting the convolution and the engagedtension member, and in. order to anchor the spring within the housingand positively prevent its accidental displacement the upper extremityof. the. spring is made frusto-conical, as at 23, by gradually reducingthe diameter of the successive coils of the spring approaching the upperextremity thereof. Positioned in alignment with the axis of the springand communicating with the housing is an aperture 24 which accommodatesa rivet 25 having an inner head 26 of countersunk form occupying thefrusto-conical portion of the spring.

As will be understood, various changes and alterations may be made tothe illustrated and described structure without departing from withinthe spirit and scope of the appended claims.

I claim:

1. In a spring plankless truck of the type involving a pair of sideframes each. having a tension member and being movable relatively to oneanother longitudinally of the truck, the combination of an upwardlyfacing convolution formed in each of said tension members, spaced lugsextending. upwardly from said tension members adjacent each convolution,a tie bar having enlarged end portions positioned between said spacedlugs, horizontal pivot means extending through said lugs and endportions, and spring means associated with said end portions andreacting against said convolutions for preventing rattling of said tierod.

2. In a, spring plankless truck of the type involving a pair of sideframes each having a tension member and being movable relatively to oneanother longitudinally of the truck, the combination'of a recessdefining convolution formed in each of said tension members,horizontally spaced lugs extending vertically from said tension membersadjacent each convolution, a tie bar having enlarged end portionspositioned between said spaced lugs and in said recesses, horizontalpivot means extending through said lugs and end portions, and spring.means positioned in said end portions and reacting against saidconvolutions for preventing rattling of'said tie rod.

3. In a spring plankless truck of the type. involving a pair of'sideframes each having a tension member and being movable relatively to oneanother longitudinally of the truck, the combination of an indentureformed in each of said tension members, spaced lugs on said tensionmembers adjacent each indenture, a tie bar having enlarged end portionspositioned between said spaced lugs and in said indentures, headlesspintl'es extending through said lugs and end portions, means removablyassociated with said headless pintles for preventing accidentaldisplacement thereof, sufficient clearance being provided between saidend portions and. said pintle and lugs to allow a horizontal angling ofsaid tie bar with respect to said side frames, and coil spring meansassociated with said tie. bar to urge it away from said indenturesandprevent rattling thereof.

4. In a spring planklessv truck. of the type involving a pair of sideframes. movable'relatively to one another longitudinally of the truck,the combination of a tie rod extending between said side frames andhaving, enlarged end portions, indentures in each side frame, spacedvertical lugs on each of said side frames adjacent said indentures' andoverlapping an associated end portion, horizontal pivot means extendingthrough said end portions and lugs, said pivotmeanshaving suflicientclearance thereabout to permit a horizontal angling movement of said tierod with respect tov said, side frames, housings formed in said endportions extending into said indentures, and resilient means positionedwithin said housings and reacting against said side frames for urgingsaid tie rod vertically and, preventing rattling of said tie rod.

DONALD S. BARROWS-

